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![]() edHelper.com Life Science Animal and Biomes Basics Theme Unit |
Six Kingdoms |
| edHelper's suggested reading level: | grades 6 to 8 | |
| Flesch-Kincaid grade level: | 9.07 |
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Six Kingdoms
By Cindy Grigg |
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1 The first scientist to try to classify organisms was the Greek scholar Aristotle. He classified living things as either plants or animals. Then he divided each of these large groups into smaller groups called subgroups. For example, plants were divided into trees, shrubs, or herbs. Animals were classified by how they moved. Animals that could fly were put into one subgroup. Animals that could swim were in another subgroup. Animals that walked, crawled, or ran were lumped into another subgroup.